how do you solve x^2+11x+18=0 with either quadratic formula. factoring. or squarerooting

+2

(2) Answers

BettieZumbrunnen

I always prefer factoring, if there are simple factors.
There are simple factors here.
x² + 11x + 18 = 0
(x + 2) (x + 9) = 0
The left side is zero if either factor is zero.
First factor:
x + 2 = 0
x = -2
Second factor:
x + 9 = 0
x = -9